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Possible Evolutionary Relationships.docx

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ANTH 2231

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Possible Evolutionary Relationships • Aferensis and Africans overlap in time  May be descendants instead of different species Paranthropus Robustus • South African species • “Nutcracker Man” • HUUUUUUGE molars (cheek teeth) • ~ 2.0-1.0 mya • SK 48 • 530 cc • Endo-cranial cast (used in the Selam fossil)  Morphology of brain  Development of specific areas of the brain  Increase in frontal lobe  Portable cortex  Thrible height  Improved abstract thinking o Language o Problem solving Forward Foramen magnum o Obligate bipeds • Increased in brain size  Small bodied 4 ft 1  High encephalization Even flatter face than Australopithecines • Thick enamel on molars  Canine and
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